Oven door



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G. D.- WHLKANSON ET AL Filed NOV., 16 1923 2. Sheets-Shea?. l

' May 33 G. D. waLmNsoN ET AL vEN DOOR me@ Nov, 16 1.923

\2 Shams-Sheet 2 george I#Patented May 13, 1924.

UNITED STATES PATENT OFFICE.

GEORGE D. WILKINSON lAND AUGUSTUS HAB/IER, OF OAK PARK, ILLINOIS, AS-

SIGNORS TO CRIBBEN 6c SEXTON COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

OVEN DOOR.

' Application led November 16, 1923. Serial No. 675,113.

To all 'whom z't may concern.'

Be it known that we, GEORGE D. WILKIN- s'oN and AUGUSTUS F. HARTER, citizens of the r United States, residin at Oak Park, in the county of Cook and tate of Illinois, have invented new and useful Im rovements in Oven Doors, of which the ollowing. is a specification.

This invention relates particullarly to oven doors; and the primary object is to provide .an improved construction involving the use of an outer sheet metal panel constituting the main body of the door, an inner sheet A metal lining, and a pair of trunnions havv-port the door and any superimposed weight ing reenforcing shanks'housed between the main panel and the lining. Such a construction provides'for the supporting of the door and any load which may be imposed upon it Awhen they door is inopen condition by the trunnions and the shank-extension thereof, which suitably may be made of cast iron and of suiiicient strength to readily supor trunnions and its bearing; Fig; .5, a

broken perspective view showing one corner of the lining member of the door; Fig. 6, a

broken perspective view showing one corner portion of the main panel of the door; Fig.

7, a broken vertical sectional view illustrat- 1 ing an'improved latch for the door, the section. being taken as indicated at line 7 .of Fig. 1'; Fig. 8, a plan view of a door, illustrating a modification, the lining being removed; Fig. 9, a broken perspective .view illustrating another modification in which the trunnions which support the door are of another form); and Flg. 10, a broken vertical sectional view taken as indicated at line 10 of F-ig. 9.

' Referring to Figs. lto 7 inclusive, A represents the frame of a range which is provided with ovens equipped, with doors A" flanges and A2. In this embodiment of the invention, the frame A is equipped with bearings, or journal boxes B for the trunnions of the doors. The members B are provided with stops 1 which are adapted to limit the down ward swing of the door. The doors A and A2 fare of the same construction and mounted in the same manner.` A description of one will suflice, n'

The door A comprises a main outer sheet metal panel 2 which is bowed outwardly and is provided at its periphery with end lianges 2a, a lower flange 2b, and an" upper flange 2; an inner sheet metal panel 3, which is provided lat its margins with end flanges 3,

a lower flange 3", and an upper flange 3; trunnions 4 received by the bearings Band equipped with shanks 4a which are housed in the space between the outer and inner panels '2 and 3; a handle 5` secured to the upper portion of the door; -and a latch 6 carried-by the frame A and adapted to engage the upper edge ofthe door` when the door is in the closed position.

The flanges 'of the main panel 2 ofthe door are notched at the lower corners of the door, as indicatedy at 7 to accommodate the sli'anks ofthe trunnions 4. Also, the flanges of the lining panel 3 are notched at the lower vcorners of the door, as indicated at 7. The ianges of .the outer and inner panels of .the door' have a telescopic relation, that is, the flanges of the lining member lit inside the flanges of the main panel.. The notches,

therefore, are complementlal 'and afford passages for the shanks of the trunnions. The

shank 4* of each trunnion preferably comprises a base portion 4b which extends through the notches at the corner ofthe door, and an arm 4c rising from the portion 4" and extending obliquely and terminating at the-upper will be noted that t e main. anel 2 of the door is so pressed as to' provi e a peripheral marginal shelf or" bearing 8 adjacent the' the interme' 'diate or main portion of the body of .the sheet being pressedY or dished outwardlyso of the member,

as to'lie in a different plane. The portions 4". of the Shanks ofthe trunnions bearupon the shelf' portion 8 at the lower portion of the door. At the .upper ends of the arms4" are small extensions 4" which bear upon the marginal bearing 8. The arms 4 are also equipped near their upper ends with ofset lugs or feet 4 which bear upon the depressed which may have nickel plated heads. The portion of the panel 2 at the points where construction is strong, sanitary, and thorthe handle 5 is connected, the metal at these oughly adapted to its purpose. points being struck inwardly slightly, how- The latch device 6 shown yiii Fig. 7 comever, as indicated at 9. Theouter panel 2 prises a flat spring mounted on a ledge 6@l 1S secured to the portions 4b and 4e by stove carried by the frame A and disposed inside bolts or screw bolts 10 which engage nuts the upper edge of the door, the spring being 11. The upper bolts 10 pass through the suitably shaped and extended through 'an base portions of the brackets 5a of the hanopeningfb in the frame. The outer end of dle, so that the same bolts which secure the the spring is curved into the form oa ring upper ends of the arms4c to the main panel 6c, the lower portion of which Serves as a of thedoor serve also to secure the handle latch for the door'. It will be understood to the door. The main panel of the door is from Fig. 7 that when the door is closed, provided at its lower corners with rfora` the upper edge of the door will ride under tions 12 through which the lower lts/,10 the ring portion 6c and the ring will snap extend. j over the upper edge of the door suiiciently The Shanks-4aof the trunnions are ro to hold it in the closed position,fr The door vided with threaded or tapped perforations may be released by lifting the spring through 13 which receive 'Screws 14 which serve to the medium of the ring-form handle. secure the lining panel 3 in position, so that In zthe modification Shown vin Fig. 8, Aa

` the housing of the Shanks of the trunnions represents the outer panel of'a door formed is thus completed. As appears from Fig. 1, from sheet metal; and 4g, 4g represent trun the port1ons4b of thel Shanks of the trunnions. In this "case, the trunnions are nions are provided with reenforcing ribs 4t equipped with Shanks 4l1 which extend by these spaces. s

which embrace the edges of the outer panel of the door. C lower corners of the door. In the illustra- When the door is in the open position tion given, the shanks 4h are formed inteshown in Fig. 3, the portions 4*- of the grallv with each other. The Shanks are seshanks of the trunnions rest upon the stops cured to the panel by stove bolts 19. Such 1 with which the bearings B are provided. a construction is cheaper than the lirst de- The bearings B are4 of a Well known form, scribed construction, but something is sacribeing open at their sides which are adjacent "f ficed in strength, owing to the omission of the door, so as to receivethe trunnions. One the arms which extend to the upper portion of the trunnions is e uipped, as shown in of the door and serve as a means for attach- Fig. 4, with-a coil Spring 15 which has one ment ofthe handle. i end secured to the trunnion and the other will tend to lift or counterbalance the door. frame of the range. The door comprises, as

As appears from Fig. `2, the base portions in the first described construction, an outer 4b of the Shanks of the trunnions are sepa- .panel 20 and a lining panel 21. In this case, rated from the lower flange 2b of the main the trunnions or hmges 22 are of a different panel of the door by spaces 16; also, the lugs form. They have Shanks 22il which extend 4d are separated from the upper flange v2c by through notches with which the lianges ofv spaces 17. Thus, when the lining is applied, the door panels are provided'at their lower the flanges ofthe lining are accommodated corners. The Shanks of the hinges are housed between the "panels of the door and From the description given, it willbe unare securedv to the panels by bolts 23 and derstood that the door is carried wholly by screws 24. The hinges or trunnions 22 1n the trunnionsand their Shanks, and that the this case are in the form of curved arms Shanks of the trunnions afford a very subwhich extend through slots 25 with which stantial reenforcement for the door. More the frame A5 is provided. The members 22 over, the shanks of the trunnions are mainly have connected with their inner ends lmks housed in the space between the outer and 26 whose upper ends are connected with the inner panels of the door. Thus it is possible upper ends of the coil springs 27. The lower to give to the door adequate Strength and ends of the springs 27 are connected with .stanchness, while still employing comparathe frame by screws or studs28. This is a tively light gauge metal for forming the well known manner of counterbalancng a through notches 18 in the `ianges at the.

l In the modification shown in Figs. 9 and end engaging the bearing, so that the spring l0, A4 represents a door; A5 represents the" ino I panels. This is accomplished without mar- Stove door. Shown, for example, in Patent ring the appearance of the door, Since the -No. 1,444,153 granted February 6, 1923."

strong castlngs which are employedf are welll'The foregoing detailed description has housed within the door. The outerpanel ofabeen .given for clearness of 'understanding the door may-thus be-madea'n integral memonly,r and no unnecessary limitations should ber, and may be suitably enameled, and its be understood therefrom, but the appended a pearance'will notfbe marred in any Way. claims Should be construed as broadly as Iglo onlyr exposed screws are the screws 10, permissible in view of the prior art.

What we regard as new, and desire to secure by Letters Patent, is:

1. The combination with an oven frame provided with bearings, of a door comprising a sheet metal panel having an inturned marginal flange which is notched at its lower corners, and a pair of trunnions adapted,

to be supported in said bearings and having Shanks extending through said notches and secured to said panel.

2. The combination with an voven frame provided with bearings, of a door comprising a main outer sheet metal panel and a lining panel spaced with relation thereto,

bearings and provided with Shanks housedI between said panels and serving to carry the same, at least-one of said trunnions being equipped with a stop cooperating with said firstnamed stop to support the door in open position.

4:. The combination with an oven frame provided with a door opening and with bearings adjacent the lower corners of the door opening, of a door comprising an outer main panel and a lining panel, said panels having telescopically related flanges with notches at the lower corners of the door, and trunnions engaging said bearings and provided with Shanks which extend laterally inwardly through thenotches and pro,- vided with extensions housed between and serving as reenforcements for the panels.

5. A door comprising a main outer panel having an inturned marginal flange, a lining panely having an out-turned marginal flange telescopicallyl received within said first named flange, said flangesbeing notched at'the lower corners of the door, and trunnions having Shanks extending through said notches and housed between Said panels.

6. A'door comprising an outer main panel provided with inturned marginal flanges, a lining panel provided with out-turned marginal flanges received telescopically within said first named'flanges, said flanges being provided'at the lower corners ofy the door with notches, and trunnions provided with shank portions extending laterally through said notches into the space between said panels, screw bolts extending through the outer panel and attached to said Shanks, and.

screws connecting the inner panel with said Shanks.

7. A door comprising an outer panel provided With inturned marginal flanges, a lining panel spaced with relation to said outer. panel, said flanges beingnothed at the lower corners of the door, and trunnions having shank 'portions extending through said notches and havmg arms extending therefrom to the upper portion of the door, means securing the outer panel to said shank 'portions and said arms, and means securing the inner panel to said shank portions and said arms.

8.A A door comprising an outer main panel which is struck outwardly and provided with marginal inturned flanges and adjacent to said flanges'with an internal peripheral bearing, said a-nges being notched at the lower corners of the Vdoor, trunnions having shank portions extending through said notches and engaging Said peripheral bearing, bolts securing said panel to said shank portions, and a lining panel covering the shank portions of said trunnions and. secured thereto.

9. A door comprising a main outer panel having inturned marginal flanges notched at the lower corners of the door, the body portion of said panel being struck outwardly and provided "with an inner marginal bearing adjacent said flanges, trunnions having shank portions extending through said notchesand provided with arms extending to the,upper portion of the door, said shank portions and said arms engaging said inner peripheral bearing and said arms being pro- -vided near their extremities with lugs engaging the inner surface of said paneladjacent said Amarginal bearing, bolts securin said lugs and said shank portions to Said.` panel, and a lining panel enclosing said shank portions and arms.

10. A door comprising a main outer panel having inturned marginal` flanges notched at the lower corners of the door, the body portion of said panel being struck outwardly and provided with an inner marginal 7 bearing adjacent said flanges, trunniqns having shank portions extending through said notches and provided with arms extending to the upper portion of the door, said shank portions and said arms engaging said inner peripheral bearing and said arms being provided near their extremities with lugs engaging the inner surface of said panel adjacent said marginal bearing, bolts Securing said lugs and said shank portions to said panel, a lining panel having outturned marginal flanges notched at the lower corners and telescopically received Within .the flanges of said first-named panel, and screws Securing said lining panel in position.

11. A door comprising a main outer panel provided with an inturned marginal flange notched at the lower corners of the door,

trunnions having shank portionsextending through said notches and provided With ex:

tensions bearing against the inner surface of the door at the upper portion thereof, lan external handle, bolts securing said handle lio to said extensions, and a lining panel covering said shank portions and extensions.

12. A door comprising an outer .main panel which is dished outwardly and provided with an inturned marginal flange and adjacent thereto With an internal marginal bearing, said flange being provided With notches, trunnions provided With shanks vided with an inturned marginal flange and adjacent thereto With an internal marginal bearing, said flange being provided With notches, trunnions provided with Shanks having base portions exten-ding through said notches and engaging said marginal bearing and having extensions engaging the marginal bearing at the upper portion of the door, an external handle, bolts extending through the outer panel and connecting said handle with said extensions, bolts extending through the outer panel and connected with thebase portions of said shanks, a lining panel provided with an'outturned marginal flange notched at its lower corners and telescopically received Within sai-d first named flange, and screws connecting said lining panel with said Shanks.

GEORGE D. WILKINSON. AUGUSTUS F. HARTER. 

